Actuating device for fluid controllers



March 30 1926. v 1,578,743

' E. K. H. LUNDBERG ACTUATING DEVICE Foa FLUID CONTROLLERS Filed March 18, 1924 Inthe accompany Patented'vMar. 30, 1925.

- UNITED STATES PATENT o FFiceff nLor KARL HJALMaRLUNDBERG, ory STOCKHOLMSWEDEN.

ACTUATING DEVICE ron FLUID coNTRoLLERs.

T 0 @ZZ whom/t lmay concern u Be it known that I, Error KARL I-IJALuAii LUNiiBiiie,- `a subject of the King'of Sweden, residing at Birlragataii 12, Stockholm, in the Kingdom of Sweden, haveinvented certain new and useful Improvements in Actuating Devices for Fluid Controllers, for which I have lina-de application for patents in' Sweden'MaylS, 1922, and of which the following is a specification.

This invention relates to a starting device for valves or the like'of the type which are adapted when opened, to deliver a predetermined quantity of liquid.l For the shifting of the valve a rotatable member (starting member) is used, provided for instance with one or more corners or projections, which, when the member is rotated, actuate the valve directly or indirectly.` A member (holding member) 'is connected with the said starting member, whichholdin'g member is acted upon by'ra spring device or the like and the shape of which correspondstol thek shape of the starting member, the position of the holding member relatively to the start* ing member being such, that when the latter has been rotated, for instance manually, to

such a position, that it is about t0 shift the valve, the holding member, has reached a dead center, whereby the spring devicewill be able` to rotate automatically the holdingmember and the starting member through such a further distance, that the starting member` opens the valveiand then permits the same ,tovbe closed. lOwing to this arrangement the valve may not be held in open position by hand. Y i

p 'ing drawing a form of the invention is shown byway of example and applied to a starting device adapted to `an automatically operating valve provided with an auxiliary valve, th'e'said valve ibeing so constructedythat after the auxiliary valvehas been actuated from ytheoutside the main valve `is opened and is theinautoinaticallyclosed, after a predetermined quantity of liquid has been let through.

Figurel is a section along the line ith-B in Figure 2.

Figure 2 in Figure 1'. c

Figure 3 is a section along the line E-F in Figure 1. u Y

- Figures 4 andV 5 illustrate diagrammaticallythe principal' parts of the starting de- Y vice in two dierent positions of equilibrium;

's a section along the vline C--Dk Application led March 18, 1924. Serial No. 700,148.

Thekvalve box l 'is `provided withltaii Ioutlet pipe `2 inthe walls of which a transverse i By u shaft 3 (starting shaft) is journalled. the starting 'shaftf aV square member `4 (starting member),locatediiithe centre line Y of the outlet piperis connectediwith a square member 5 (holding member) located atene1v y of the journals of the shaft 3. yThe ylateral y surfaces ofoneof the said square members forni an angle 0f 22.5O with the lateral surfaces respectively of the other member as shown in Figures 4 and 5. spindle 3 is; provided with-a tightening cone 6 and outside the outlet pipe 2 a handle 7 is fixed to the spindle. In the journal at the end of the'spindle onwhich the holding'v member 5 is provided, the outlet pipev 2k is provided with hollow` nipples 8v (Figure 3),-

inwh'ichpist'ons 9actuated by springs 10,l are movable.V The said nipplesare closed by screw-threaded plugs 11j, by means of which kthe tensionjof the springs 10 is adjustedvand the pistons 9 are guided. l In a guide 12 provided in the `outlet pipe above the starting The starting member 4 isslidable a spindle 13 (starting i.

spindle,),`the lower end 1,4 ofwhich always bears against one of the sidesof the stai'ting member. 4. On the top end of the starting spindle v13 a disc 1,5 is provided and. a screwthreaded pin 161is adjustable inthe same.

yThe effective length'of the said pin is so `adjusted that whilethe valve is closed and thelo'werend14 of thestarting spindle bears against one of the sides of the starting memi ber 4, the free 'end of the pin 16 is located iminediately below-v the auxiliary `valve 17,

which forfthe opening of the valve should be actuated by the starting device the said' auxiliary valve constituting in the y'present case a counter member.

"The starting shaft 8 together with the starting member 4 vand the holdingl member 5 is able to occupy only two positions of equi-v librium counted from leach starting position, viz, the `starting position, shown in Figure 4and a second position ,of equilibrium shown in Figure 5. u In the starting position the' pistons 9 actuated by the springs l()v gear against two opposite vsides of the holding member 5. In the second position of'equilibrium, Figure 5, the said pressure'is sustained by two opposite corners of the holding member 5 and the state of equilibrium takes place as the said `two corners are located in a plane perpendicularto the end surfaces of ythe pistonsQ. At all other posi' 'or leaks.

tions ot the starting shaft a moment of torsion on the starting shaft 3 is created by the springv pressure against the corners of thc holding member 5, which turns the sha tt 3 into the next starting position (corresponding to Figure 4). f

rlhe start-ing device acts in the following way The shaft 3 is rotated at starting by means ot' the handle 7 in the'direction indicated by ,thefzirroxvs Figures 4 and 5. The starting spindle 13 slides during the turnning on the starting member 4. Owing to the oblique position ot the sides of the starting member 4 with relation tothe sides of the holding' member 5 the 'starting spindle 13 will not be forced upwards during the turning ot the starting member 4 trom'the starting position, Figure 4, to the second position of equilibrium, Figure 5. It the angle of inclination is 22.50, the starting spindle 13 Will be located at just the same level in both the different positions ot' equilibrium shown in Figures 4 and 5. As the turning of the starting shait in the direction indicated by the arrows is continued, the starting spindle 13, sliding on the starting member 4, is forced upwards las the corner ot' the said member 4 crosses theV centre line oit' the starting spindle 13. The tension ofthe springs 1() lis so adapted that the moment' ot torsion vot the rsprings: with regard-to the starting lshaft, at'ter the latter` has passed its second position of equilibrium, Figure 5, is able to turn the starting shaft .and the'.starting'member into a new starting position corresponding to the previous starting` position shown in Figure 4, even if the turning of the handle 7 has been interrupted, after the starting shaft has Vpassed its second position of equilibrium, Figure 5. As the starting spindle 13 is raised during the last part ot' the turning operation, the Vadjustable pin` 16, screwed into the starting spindle, actuates the auxiliary valve 17 so that it is lifted 'and the main valve is opened, The pressure of the liquid flowing through the valve against the disc 15 aids iln'keeping the starting spindle 13 pressed 'against the starting member 4 during the last part of the turning operation` so that as the valve is being closed the auxiliary valve 17 does not impinge against the pin 16.

' The "cone V`(Sprevents Yleakage'. "Counted from' each starting position, the starting' device has only tivo positions of equilibrium, but in no rone ot' these positions actuates the pin y16 or the auxiliary valve 1 7, in consequence whereof the main valveisclosedv at both the positions of equilibrum. Cont-1equently the starting device cannot beso positioned that the main valve remains open Giving tothe tact that the lifting ot the starting spindle ltakes place 'during the last period of the rotation and zowing; to themoment Aot torsion exerted by the spring actuated pistons t) on the loci;- ing member 5 ot' the starting shaft, the starting takes place nearly instantaneously and always during the same period, which is oi importance `for the'starting ot'valves which should deliver automatically a certain quan.- tityfoi liquid foreach starting.

.Starting devices arranged in accordance with this invention may evidently be carried out in many other Ways than'that stated above by Way of' example. In Vany case the starting member 4 is provided with one or more corners or parts projecting from its centre, which during the turning ot the starting member successively actuate the starting` v spindle While l the vholdingl member 5 connected With the starting member is so arranged that it, in consequence of kthe pressure exerted on the member, causes .the starting member 4 after it has been yso turned that one of its corners or projections has actuated the starting lspindle to occupy a position of equilibrium in which the ,starting spindle is not actuated by a cornerfor projection of the starting member.A The holding member and the starting member ought to be so arranged with relation tofeach other that the starting member when turned for actuatingthe starting spindle is not able to occupy other positions of equilibrium than those in which the starting'lspindle is not acted upon by a corner or projection of the starting member. yThe shape of the holding member must, however, be analogous to the shape rof the starting member. Alsothe spring pressure may evidently be yeffected by other means than those shown in the drawing. The starting spindle vmay be dispensed with, in which case the starting member may aetuate directly the auxiliary valve.

The invention may evidently be applied to other cases than that indicated.

' I claim:

' 1. In a starting-devicel for valves or the like adapted to deliver predetermined quantitiesV of liquid the combination With a rotatalolev starting effecting member, provided With projections vfor the shifting .of the valve, ofa holding member connectedwith ythe said starting-,member and corresponding in'shape thereto, and yieldablemeans acting 'uponthe said holding member, the position of the holding member'with relation tothe starting 'member being such, that, yafter the starting member has been rotated through such a distance that is' about to openr the valve, the holding member causes the'starting member to automatically move through suchk a `further distance, that it opens 'the 'valve and permits the same to be closed.

. 2. A starting ldevice accordingto'clainrl, characterized by the fact that the starting member consists ot an equilateral body,'aud vthatpt'he shapey of the holding` member correspondsto the shape oic thestarting meinN ber and the holding member is actuated upon on one or more of able means.

3.` A starting device according to claim l, wherein the lateral surfaces on the starting' member and on the holding member which actuate the counter member respectively are acted upon by the yiel-dable means and have its sides by the yieldsuch anroblique position in relation to 'each' other, that in such positions of equilibrium as may occur, viz. when pressure against the holding member is sustained by one or more of its lateral surfaces or by one, or more `of its corners, the starting member does not actuate thevalve.

4. A starting device accordingto claim l,

cha 'act-erized by the fact that connection between the starting' member and JChe Valve consists of a suitably guided spindle', and aV screw threaded pin in engagement With the spindle for adjusting the effect-ive 'length` thereof. I Y n v In testimony whereof I haye hereunto' affixed my signature. Y 

